Ellen Wu walks the walk, even when she's working. Wu, executive director of the California Pan-Ethnic Health Network, not only  works to promote better health in underserved communities, but she has slipped a  few things into her Oakland workplace to keep herself and fellow workers a  little more fit. "We put in a tread desk," Wu said. "It's essentially for conference calls and  you walk on the tread desk as you do your work." And, she added with a little smile, "There's always a line of people wanting  to get on it."

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